Tire boot



M. O. HANEY TIRE BOOT Fil'ed may 2'?. 1927 ATroRNEyS Patented pr. 10, 1928.

PATENT OFFICE.

MARTIN oscan HANEY, or 1011A, KANSAS.

TIRE Boor.

' Application med M'ay 2751927. serial No. 194,779.

My invention relates to internal boots or blow out patches for pneumatic tires.

Withl tire boots or blow out patches now commonly used a textile fabric body is provided which is secured to the inner Walls of the tire shoel by a suitable adhesive. Tire boots or patches thus constructed are objectionable in that the adhesive melts or Y gums by reason of the heat generated by the road travel and expansion of the tire, permitting the patch to pull away or shift from its original position leaving a coating of this gummed substance upon the walls of the tire .shoe which adheres to the pneumatic tube and chafes the latter. Moreover this condition causes the pneumatic tube to adhere to the walls of the shoe making its removal impossible without damaging or ruining vthe tube.

With these difficulties in mind it is the principal object o f this invention to provide an internal boot or blow out patch, which after being secured in place within the tire shoe, will remain aixed to the walls of the latter regardless of the heating and expansion of the tire thereby preventing the adhesive from contacting with the tire tube.

Another object of the invention is to provide an internal tire boot or blow out patch which will stretch or contact with the expansion and 'contraction of the tire shoe and remain fast to the walls of the latter.

The invention also contemplates a device of this character which will afforda maxi` mum support and protection to the pneumatic tubey and permit the tire to be rolled a reasonable' distance while flat or inated to a minimum degree without damaging the patch any more than the tire.

It is another 4object of my invention to provide an internal tire boot or patch wherein the textile body or reinforcingelement is entirely enclosed thus obviating damage to the inner tube by roughened particles such as the cords or strands forming the Itextile fabric.v

With the preceding and other objects in mind the invention consists in the combination, arrangement of parts, and operations to be hereinafter specifically referred to, claimed and illustrated in the accompanying drawings where;

Figure 1 is a perspective of a section of patch tire shoe having my improved bootor patch applied thereto;

Figure 2 is a perspective of the boot or F igure 3 is a sectional vien7 of the same taken on line 3 3 of Figure 2,v and Figure 4 is a detail perspective of the reinforcing padl and illustrating the arrangement of the reinforcing laminations, and, Figure 5 is a detail-view of the reinforcing pad embodied in the invention.

Referring-Ito the invention in. detail an elastic circular reinforcing pad 5 of such diameter-as to extend .over a substantial area of the crest of the tire shoe 5 so as to project an appreciable distance beyond all sides of the blow out or\ rupture, is provided@ The upper face of the pad 5 is skived from a point adjacent its outer edge to its out-er edge as indicated at 6 to reduce the thickness of the pad at the zone.

This pad 5 is preferably formed of`rublberized fabric of suitable thickness having one or more laminat-ions of parallel reinforcing cordsv or strands 7 incorporated therein with the cords or strands of one 'ply lintersecting those of thevalternate ply. These plies are disposed in spaced relation to eliminate wear by friction and the strands of each ply extend diagonally with respect to the transverse axis of the crest of the shoe to increase -the strength and durability of the ad.' -V

I ave found that a circular pad 1s the -most advantageous in that it produces a maximum support for the pneumatic tube andA offers but a minimum rolling reslstance to the tire shoe. However, this pad may be nswI fashioned in any other configuration that will prove practical.

The elastic pad 5 is confined centrally betweeny superimposed rectangular cured rubber sheets Sand 9 of suiiicient size to extend across the crest of the tire shoe and around a substantial area of the side walls thereof as illustrated in Figure 1. A suitable ad# hesive is applied to the opposite faces of the rubber sheets to secure these parts together as a unit. these rubber sheets and pad thus assembled to pressure rolls to produce an effective bond between the parts.

To eliminate obstructions in thev tire shoe It is desirable to subject l v sheets 8 and 9 at out.

to interferewith the pneumatic tube the upper faces of the their edges are skived parallel to the skived outer edge of the pad 5 as indicated at 10. A 4

In use, the interior of the yshoe and the skived edges of the sheets are coated with a suitable aircuring adhesive after lirst preparing the shoe. as p with gasoline. The boot or patch is now applied to the interior of the shoe with the pad 5 directly beneath the rupture or blow Pressure is' then applied to the shoe and boot or patch and the adhesive allowed to dry permanentlyl securing the patch and shoe together.

By' entirely enclosing the laminated 'structure between the rubber sheets the pneumatic tube is protected against friction and the rel sultant cliafing obviated. It Will also be observed that the device will stretch or expand as the tire expands incident to road travel and thus support and protect the pneumatic tube at all times.

What is claimed is:

1. An internal tire boot including a vrelatively lat elastic casing to be secured to the inner walls of a tire shoe andhaving its marginal portions tapered, and a compress# the` proper vpositioning of by buing or Washing laminations com ible element held within the casing and having its edges tapered in a plane parallel to the tapered edges of the casing.

2. In a repair patch for tire shoes, a flat com ressible element of suiiicientsize to excompressible element is disposed, one of which is arranged to be fastened to the walls of the shoe, and means vuniting the 'compressible element and sheets together.

3. Anv internal tire boot including a fiat relatively thin casing, a compressible reinforcing pad secured within the casing composediof a plurality of spaced reiniorcing osed 'of textile 4strandsincorporated therein, being arranged in crossed relation with the textile strands of each alternate lamination extending inopposite diagonal directions the alternate laminations l across the'pad, one Wall of the casing being arranged to be fastenedl to the Walls of a'- tire shoe whereby the boot is caused to expand and contract 'MARTINO'SCAR HANEY.

with the tire according 4to the air pressure therein. 

